Unit set air source hot pump, and water hot pump and to source hot pump of technology for one, combined innovation of system design, in summer, hot pump unit provides energy-saving hot of while can free provides air-conditioning; winter or spring, and fall not need air-conditioning Shi using environment air for hot Exchange, achieved air source hot pump of energy-saving heating; North cold area winter can enabled water or to source work mode as heat for energy-saving heating. Hot and cold supply efficiency relative to other more energy-efficient heat pump unit for heat pump unit, strong environmental adaptability